Climbing rose plant named `JACarch`

ABSTRACT

A climber rose having a vigorous, arching, climbing habit of growth; healthy, dark green, glossy foliage; recurrent bloom; resistance to disease; and ability to survive in Zone 5 of the U.S.D.A. Cold Hardiness Map.

The present invention relates to a new and distinct variety of roseplant of the climber class which was originated by the inventor bycrossing the variety KORbin, with the variety Prairie Fire.

The primary objective of this breeding was to produce a new rose varietyhaving the repeat flowering, healthy foliage, vigor and cold hardinessof the female parent combined with the cold hardiness, healthy foliageand arching climbing canes of the male parent. The objective wassubstantially achieved along with other desirable improvements asevidenced by the following unique combination of characteristics whichare outstanding in the new variety and which distinguish it from itsparents, as well as from all other varieties:

1. Heavy production of flowers produced throughout the growing season;

2. Long arching or climbing canes;

3. Glossy, dark green, disease-resistant foliage;

4. Excellent vigor; and

5. Cold hardiness in Zone 5 of the U.S.D.A. Cold Hardiness Map asestablished at Boerner Botanical Gardens, Milwaukee, Wis.

Asexual reproduction of this new variety by budding and hardwoodcuttings, as performed at Wasco, Calif., shows that the foregoingcharacteristics and distinctions come true to form and are establishedand transmitted through succeeding propagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--KORbin.

Pollen parent.--Prairie Fire.

Classification:

Botanical.--Rosa hybrida.

Commercial.--Climber.

FLOWERS

Observations made from specimens grown in a garden environment in Somis,Calif., from March through November, 1992.

Blooming habit: Recurrent.

Bud:

Size.--11/4 inches when the petals start to unfurl.

Form.--Long, pointed ovoid.

Color.--When sepals first divide, bud color is White Group 155B. Whenhalf blown, the upper and lower sides of the petals are White Group155B.

Sepals.--Color: Green Group 138B. Surface texture: Covered in finehairs. There are three lightly appendaged sepals. There are twounappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 138A. Shape: Funnel. Size: Small.Surface: Smooth.

Peduncle.--Length: Short (11/2-2 inches). Surface: Very glandular.Color: Light green and bronzy. Strength: Stiff, erect, slender.

Bloom:

Size.--Medium. Average open size is 21/2-3 inches.

Borne.--Several together. If in clusters: Rounded.

Stems.--Long (Basal shoots to 5 to 6 feet with lateral stems terminatingin flowers. Lateral stems 8-12 inches), strong.

Form.--When first open: High centered. Permanence: Flattens, outerpetals curl back.

Petalage.--Number of petals under normal conditions: 25.

Color.--The upper and reverse sides of the petals are White Group 155B.The base of each petal has a small (1/4×1/4 inch), greenish yellow halfmoon at the point of attachment. The major color on the upper side isWhite Group 155B.

Variegations.--None.

Discoloration.--No change in the general tonality at the end of thefirst day or at the end of the third day.

Fragrance.--Moderate.

Petals:

Texture.--Thick.

Shape.--Round to slightly deltoid.

Form.--Tips slightly recurved.

Arrangement.--Imbricated, with no petaloids in the center.

Persistence.--Drop off cleanly.

Lastingness.--On the plant: Fair (3-5 days). As a cut flower: Fair (5days).

Reproductive parts:

Anthers.--Size: Medium. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments.--Color: Yellow.

Pollen.--Color: Gold yellow.

Styles.--Color: Red.

Stigmas.--Color: Greenish white.

Form: Climber.

Growth: Very vigorous, arching or climbing.

Foliage:

Number of leaflets on normal mid-stem leaves.--5 or 7.

Size.--Medium (5×4 inches).

Quantity.--Abundant.

Color.--New foliage: Red. Old foliage: Dark green, glossy. Green Group139A.

Leaflets:

Shape.--Pointed oval.

Texture.--Upper side: Leathery, glossy.

Edge.--Serrated.

Serration.--Single, small.

Petiole rachis.--Color: Green.

Petiole underside.--Smooth, with occasional prickles.

Stipules.--Medium, bearded.

Disease resistance.--Resistant to mildrew and rust under normal growingconditions at Somis, Calif.

Wood:

New wood.--Color: Reddish. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Medium, hooked slightly downward.

Color when young.--Red.

Small Prickles:

Quantity: On main stalks: None. On laterals: None.

It is claimed:
 1. A new and distinct variety of rose plant of theclimber class, substantially as herein shown and described,characterized particularly as to novelty by the unique combination ofits vigorous, arching, climbing habit of growth; healthy, dark green,glossy foliage; recurrent bloom; resistance to disease; and ability tosurvive in Zone 5 of the U.S.D.A. Cold Hardiness Map.